But with today being the day that Web sites like Wikipedia, BoingBoing, Reddit, and many others went dark--not to mention Google and others that featured less drastic forms of anti-legislation protest--it was striking to see just how much issue dominated the conversation on Twitter.

On Tuesday, for example, there were approximately 106,500 mentions of the term "SOPA" on Twitter. But by 2 p.m. PT today, that number had exploded to more than 3.5 million. Similarly, there were about 86,500 mentions of "PIPA" on Tuesday, and more than 655,500 today. All numbers come from Twitter via HootSuite.

And there were plenty of other SOPA- and PIPA-related terms that dominated Twitter today. Others included "end piracy," "blackout," "#iftheyshutdowntwitter," and "#iftheyshutdownwikipedia." In each case, the number of mentions either went up significantly since yesterday, or were used for the first time today and generated large numbers of mentions as the day went on.

There are plenty of other terms related to the bills making their way across Twitter as well. One is clearly being propagated by people unclear on what SOPA even is. The telling term is "WTF is SOPA?" (See CNET's FAQ on SOPA or this roundup of our SOPA coverage.)

Related video:

This content is rated TV-MA, and is for viewers 18 years or older. Are you of age?